Table 7.

IDH1 and 1p/19q status of high- and low-risk groups of patients with LGG and those with GBM

	LGG		GBM
	High risk	Low risk	High risk	Low risk
n	121	395	135	19
IDH1 status
Wild type	73 (60.3%)	21 (5.3%)	130 (96.3%)	10 (52.6%)
Mutation	47 (38.8%)	372 (94.2%)	2 (1.5%)	8 (42.1%)
Unknown	1 (0.8%)	2 (0.5%)	3 (2.2%)	1(5.3%)
1p/19q status
Codel	13 (10.7%)	156 (39.5%)
Noncodel	108 (89.3%)	239 (60.5%)	130 (96.3%)	18 (94.7%)
Unknown			5 (3.7%)	1 (5.3%)
IDH1 and 1p/19q status
Wild type and noncodel	73 (60.3%)	21 (5.3%)	126 (93.3%)	10 (52.6%)
Mutation and noncodel	34 (28.1%)	216 (54.7%)	1 (0.7%)	7 (36.8%)
Mutation and codel	13 (10.7%)	156 (39.5%)
Wild type			4 (3.0%)
Mutation			1 (0.7%)	1 (5.3%)
Codel
Noncodel	1 (0.8%)	2 (0.5%)	3 (2.2%)	1 (5.3%)